Improvement in yarn-delivery apparatus for braiding-machines



UNITED STATES 'PATENTE Ormel-2.

G. F. CHAMBERS AND SQUIRE ROBINSON, OF WORCESTER, MASSACHUSETTS.

IMPROVEMENT iN YARN-DELIVERY APPARATUS FORBRAIDING-MACHINES.

Specification forming part of Letters Patent No. 55,239, dated June 5,1866.

ings, formin'g a part of this specification, in'

which- Figure l represents a perspective view of so lnuch of abraiding-machine as is necessary to illustrate our invention. Fig. 2represents a longitudinal-central section of Fig. l, and

Fig. 3 represents aperspective view of the parts as used prior to theapplication of our invention.

In the drawings, A represents the grooved base which supports thebobbin-spindle Band standard O, upon which works the thread-tensionweight and stop D. ln the old mode a bobbin catch-weight, E, is alsoemployed, as 'shown in Fig. 3.

The grooved base A is applied to and operated in the braiding-machine inthe well-known and ordinary manner. Therefore no further description ofthe same is necessary.

As heretofore constructed and used, the thread is passed from the bobbinFthrough an eye, c, in standard G, thence down between the parts b b ofthe tension-weight D and standard C, then up on the outside of the partsb b, and through an eye, c, in the top of standard C,to be braided withother threads in the usual manner. As the tensiouupon the threadincreases weight D is raised until it comes in contact with the bottomof the bobbin stopweight E, when the latter is also raised until itspoint d is elevated above one of the projections c, when the bobbinturns and delivers yarn.

It is designed to have the weight D fall quick enough to take up theslack of the thread and prevent the knotting thereof, while the weightEfalls so as to prevent the bobbin turning more than one notch c. Inpractice, however, it is found that in running the machine at greatspeed the bobbin is liable to turn two or more notches, while the weightD does not take up under such circumstances the slack of the thread soas to prevent knotting.

Our invention obviates all the above objections, while at the same timethe yarn may be braided direct from the bobbins upon which it is spun.Again, by our invention great saving of stock is effected in consequenceof the more perfect and even tension upon the thread. The work, too, ismore evenly and perfectly done and looks much better.

One mode in which our invention can be ap plied to practical use isshown in Figs. l and.

2 of the accompanying drawings.

The weight E is not used, noris it necessary to use a bobbin with anotched head.

Standard C is slotted or cored out to receive a lever, G, which ishinged at f, and has an eye, g, through which the thread passes. The

lower end of lever G is flattened and curved to fit the head of thebobbin, while the other end of said lever has an inclined projection, h.

A metal spring, i, fastened to the standard O at j, bears or presses thelower end of lever G against the periphery of the bobbin, and thus thebobbin is held from turning by friction. The thread is passed frombobbin F through eye g, thence down under weight D, thence up andthrough eye c, to be braided in the usual manner. 5

Springe' may be attached to lever G and bear against standard G, ifpreferred.

The operation is as follows: As the tension of the thread increases theslack and stop weight D is raised until it reaches the position shown inblack lines, Figs. l and 2, when the' least elevation from such positioncauses it to press in the upper end of lever Gby its action upon theinclined projection 7b, thereby forcing out the lower end of the samelever, which relieves the bobbin-head from friction and allows it toturn vand deliver yarn. Weight D readily takes up all the slack thread.Consequently the machine can be run at greatspeed.

By our invention the yarn is delivered gradually and as it is braided.

Projection h may be placed lower down, if preferred.

A small screw may be passed through the lower part of standard G, inorder to increase or diminish the pressure of spring t'.

Weight D answers thepurpose of stopping the machine when a threadbreaks, as in the ordinary and common machine, but is never liable tofall and stop the machine unless the thread breaks-aan occurrence quitecommon with the old machine, especially when it is run at high speed.The position of lever Gwhen yacted upon by Weight D, as above stated, issliding Weight D, ofv afrietion-lever having a shown in redlines, Fig.2. projection, h, as and for the purposes set forthfHavingdesoribedourimprovementsinbraid- 3. The combination, withfriction-lever Gr L ing1nachines,wh`at We claim therein as new of slideor stop and tension-Weight D and` and of our invention, and desire tosecure by spring j, substantially as set forth. Letters Patent, s- GEO.F. CHAMBERS.

l. The combination, with standard O of a SQUIRE ROBINSON.friction-lever, G, substantially as and for the Witnesses: purposes setforth. Trios. H. DODGE, 2. The combination, with standard G and H. L.FULLER."

